Downdraft hot-water heater



Sept. 2S 1926.-

C.. wE |DLE R DOWNDRAFT HOT WATER HEATER f Filed oet. 2, 1925 fettllilill ATTORNEY raaaaa sept. as, i926.

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' CHARLES wEiiJtEia, 0E CHICAGO, iLLiNors,

' -Dowiunnarr Hor-WATER HEATER.

Application filed KOctober 2j. 1925. Serial N'o. 60,061.

Vover, shall contain in a minimum space a maximum water capacity. Y

One of the important obJects of thisin- Yor the like, means forpositively'directing the blast of heating gases from the flame of thefurnace first upwardly and then downwardly,and finally to a dischargeilueso as to result in a maximum utilization of heat units developed.

Still another and further important bject of this invention is toprovide, in a down'draft furnace, means for regulating and directing thefiow of heated air both upwardly and downwardly, whereby a veryefiicient combination of theY oxygen of the air with carbon andthe likeis produced.

Other andfurther important objects of the invention will be apparentfrom the dis'- closures in the accompanying drawings and followingspecification.

The invention, in a preferred form, is il- Y lustrated in the drawingsand hereinafter more fully described. n

In the drawings: l

Figure 1 is a vertical elevation, partly in section, illustrating theconstruction of the improved down draft furnace of this invention.-

Figure 2 is a top plan view of the furnace, parts being omitted.

Figure 3 is a vertical sectional view illustrating the interiorconstruction 0f the furnace and the water container.

Figure l is a sectional view, taken on the line le- 4L of Figure 3.

Asshown in the drawings: i

The reference numeral 1 indicates generally the grate bars of a furnaceor the like, which grate bars may be substituted by a gas burner orsimilar element, if desired.

Positioned above the grate bars is awater tank or theflike 2, preferablycylindrical and comprising an. outer shell 3 and an inner shell4, rwhichis in the shape of a frustruni of a'cone,y as illustrated in vFigure 3,and which is open to provide for free passage of heated air and burninggases therethrough.

lwater ventioiiis to provide, in a heater for water of heated water atall times.

Positioned in theinner chamber L-is a coil, pipe or the like 5, adaptedforthe passage of cold water therethrough to be heated,

and adjacent the coil 5 is a container 6 also adapted for the receptionof water to be heated,

A pipe 7` leads into the container 6 of the coil 5, this pipe being theinlet vpipe for cold under pressure.

At the top of the coil 5 a pipe 8 leads `out-Y wardly and upwardly to ahot water receiving vtank 9, which in turn is connected with andordinarily containing water 9 the tank 2 by means of pipes 10, which`allow the water to flow into the space between the `wallsB and 4l."Outlets 11 are provided for the heated water in the top of the tank 9;

Additional pipes 12 are provided at the bottom of the tank and one ofthese pipes is connected by a short connection 13 to the intake pipe 7,the connection 13 having a suitable regulating valve or other stop cock14 therein.

ed air rising through the inner portion ofV the tank 2 will be deflectedby the upper tank 9 and the cover member 15 down past the helical flange16 into openings 17 positioned in the inner walls 18 of the furnace. Asuitable outer wall 19 is also provided to allow for a flue 20 to beprovided for the discharge of burned gases.

lt will be seen `that herein is provided a down vdraft burner or heater,particularly for water, wherein the heat units developed byV combustionof fuel will be practically all utilized and in a very desirable mannerso as to allow fora large supply and reserve Further, a furnace Vorheater is provided which requires but little attention, and one whichwill not ybe liable to become damaged orV get out of order.

' I am aware that many changes may be parting from the yprinciples yofthis invention,

and I therefore do not purpose limiting the patent granted hereonotherwise than as necessitated by the prior art.

I claim as my invention:

l. The con'ibination with a furnace including wall portions delining`exhaust lines and openings at the lower end portion of the tluesopening` communication between the lues and the interior oit thefurnace, ot a tank confined in the furnace and including an inner shelltapering upwardly and inwardly, a supply` conduit in communication withthe tank, a receiving tank providing` the top Wall ot the 'furnace anddisposed in spaced relation With respect to the lirst mentoned tank,conduits supporting the receiving;l tank above the first mentioned tankand opening;` connnunication between the first mentioned tank and thereceiving` tank, a coiled conduit in communication with the receivingtank and confined Within the inner shell, a container disposed at thelower-end et the coiled ronduit, and in conimnnication therewith, asupply conduit in communication therewith, supply conduit incommunication with the container, and a member confined between theouter shell of the first mentioned tank and the interior Walls of thefurnace providing:r a spiral passage leading' from the spare between thereceiving` tank and the first mentioned tank to the openings ot' theexhaust lues.

A down draft burner including a tank comprising an inner and outershell, the Walls ot the inner shell et the tank being tapered upwardlyand inwardly, a .supply conduit in communication with the tank, areceiving tank disposed above and in spaced relation with the lirstmentioned ta conduits supporting,` the receiving tank abore the firstmentioned tank and opening: communication between the lirst mentionedtank and the rereiving tank, a coiled conduit contined Within the Wallsoi the inner shell, and in eonnnuniimtien with the receiving tank, aconduit in communication with the suppl)v conduit and the coiledconduit. and a member extending spirall)v around the onter shell.

In Witness n'hereoli, I hereunto subscribe my naine this 23th day olSeptember A. l).I 1925.

CHARLES VEIDLER.

